* Add 1 Part 2412b White Tile, Modified 1 x 2 Grille with Bottom Groove / Lip (Alternate) (match ID 1)
* Change 1 Part White 2412a Tile, Modified 1 x 2 Grille without Bottom Groove / Lip {match ID 0 to 1}
Comments from Submitter:
60 sets lot I bought a few years ago, most inv. checked but forgot this one to change...